Submitted an eligibility form, then took three online tests, then had application reviewed and was invited to interview. The day consisted of 3 x 25 minute interviews, coffee with current interns and a tour of the labs. The interviews were mainly technical and biochemistry-based in nature. I do not advising spending much time preparing information on GSK as a company, but instead brush up on fundamental biochemistry knowledge. There were one or two STAR-based questions but nearly all questions were technical.